package test;

public class YootkDemo3 {
    public static void main(String[] args) throws Exception {
        String str ="沐言科技：www.yootk.com";
        StringBuffer buffer = new StringBuffer(str);
        System.out.println("【StringBuffer】" + buffer);
        String message = buffer.toString();
        System.out.println("【String】" + message.toUpperCase());
    }
}
